I have an object I would like to deform with a lattice modifier. I have a lattice prepared that entirely encloses my mesh. I select the modifier for my mesh, but in the modifier window, as soon as I select the lattice in the Object dropdown, it deforms the mesh in an undesirable way.
Any idea why it gets deformed?
Here is the lattice:

the mesh:

and the mesh deformed as soon as I select a lattice in the object dropdown:

I am using blender 2.69. Thanks!